HP-19C/-29C
| Industry | Electronics, Computer hardware, Calculators |
|---|---|
| Founded | January 1, 1939 |
| Products | HP-19C calculator, HP-29C calculator |
| Website | www |
The HP-19C and HP-29C represent sophisticated scientific and engineering pocket calculator models manufactured by Hewlett-Packard between 1977 and 1979. As the concluding units in the "20" series, succeeding the HP-25, these calculators incorporated Continuous Memory—a battery-backed CMOS memory system—by default.
Distinctively, the HP-19C included an integrated compact thermal printer, making it one of the rare handheld scientific calculators equipped with built-in printing functionality. While desktop models such as the HP-91, HP-92, and HP-97 also featured printers, later handheld versions like the HP-41C required external printing devices. To operate its printer, the HP-19C utilized a battery pack consisting of four AA-sized NiCd rechargeable cells, which contributed to an increase in overall weight.
Both calculators were equipped with essential features including RPN logic, 98 programming steps, statistical analysis tools, and 30 storage registers. They enabled software development capabilities with applications such as a prime number generator. Their programming functionalities expanded upon those found in the HP-25 by introducing subroutines, increment/decrement loop constructs, relative branching commands, and indirect addressing through register 0.
Within HP's internal project designations, the 29C was codenamed Bonnie, while the 19C was known as Clyde.
Upon release, the manufacturer's suggested retail prices were set at $345 for the HP-19C and $195 for the HP-29C.
A modified variant featuring a reversed display orientation was produced by Educational Calculator Devices under the name EduCALC 29C GD.
Simulators and emulators
- HP-29C simulation software compatible with Windows
- Emulators for HP-19C and HP-29C available on Windows
- Linux-compatible HP calculator emulators
- Cross-platform HP-29C microcode emulator
- Windows-specific HP-29C microcode emulator
